Department of commerce



DEPARTMENT OF COMMERCE UNITED STATES PATENT AND TRADEMARK OFFICE MISSING PAGE(S) PATENT NUMBER 2 028 471 FOR THE ISSUE DATE 01/21/1936 HAS BEEN SCANNED/LOADED, BUT WITH MISSING PAGES(S). UPON RECEIPT OF THE MISSING PAGE(S), THE ENTIRE DOCUMENT WILL BE RESCANNED.

THIS NOTICE IS FOR THE MISSING PAGE(S) CONTAINING:

DRAWING 1 DEPARTMENT OF COMMERCE UNITED STATES PATENT AND TRADEMARK OFFICE MISSING PAGE(S) PATENT NUMBER 2 028 471 FOR THE ISSUE DATE 01/21/1936 HAS BEEN SCANNED/LOADED, BUT WITH MISSING PAGES(S). UPON RECEIPT OF THE MISSING PAGE(S), THE ENTIRE DOCUMENT WILL BE RESCANNED.

THIS NOTICE IS FOR THE MISSING PAGE(S) CONTAINING:

DRAWING 3 Phtmwd Jun 2!. 19315 PATENT OFF-HIE AMAWLIW.WM7&H1

Gabi.

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"I: further object otthulnvmtiontopmvtdcnnmre! lad cflflentaystcmtor heat mercry which utilize: the natural 0! nuldstntltknuou byd-ezuttyuumesmlcr tnmthhtonlyuwhoiicqwuiefitarwfllbe drcuhtethmghthcmtcm.

It Is mothzrobkct of this tnveatlon to proddeenemclentniteheatmrysswn man; mptnbletolnyphatntlcvoostwhkh simple construction. easily clunable mrltn which llquidlscircubtul contain-ll rdsuvdy low perczntage 0! solid material.

A still further object of this invention L: to wofldeamvelanfleflclcntheutexchaflt which eflecusmoothtmohstruzted flow or the llqutdflovtngthroughltmdwhichmbeeadly tnspectedlndckancd.

It I: 1 further object 0! this lnvtntlon 013G0- vtde nnovellut exchanger whose capacity may beanhnmdtomeetdm'ertnavolmnerequircmeats.

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